Fireplace-heater



Patented Sept. 6, I898.

N0. 6l0,l96.

J. B. ULDEBSHAW.

FIREPLACE HEATER.

(Application filed Dec. 11, 1597.

(No Model.)

Wimasses: W

@l lwulw Afiorne llnrrnn firn'rns lnrnnr Urrrcn.

J OIIN B. OLDERSIIAVV, OF BALTIMORE, MARYLAND.

FIREPLACE-AH EATER.

SPECIFICATION forming part of Letters Patent No. 610,196, datedSeptember 6, 1898. Application filed December 11, 1897. Serial No.661,519. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN B. OLDERSHAW, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Fireplace-Heaters, of which the followingis a specification.

This invention relates to improvements in fireplace stoves or heaters ofthat kind for which Letters Patent of the United States were granted meNovember 29, 1887, No. 373,846.

The invention consists of two features, and will first be described, andthen pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical section of thestove on a line'taken through the front door and extending diametricallyto the back. Fig. 2 is an inverted plan of the top and cross-section onthe line 2 2 of Fig. 1. Fig. 3 is a diametrical crosssection of the topon the line 3 3 of Fig. 2. Fig. 4 is an inverted plan of the bottom ofthe stove.

The stove-front A, feed-door B, ash-drawer opening 0, air-drum D, twohot-air chambers E and F in the top, and smoke-fines f, g, and h arelike the same parts in my Letters Pat ent above mentioned.

My present improvements comprise the magazine Gr without any dome.Around the exterior of this is a flange 0, having holes d for thepassage upward of smoke and products of combustion to a chamber 6 abovethe magazine. The short smoke-flue f is in the crown or top Z of thischamber. Now one feature of my invention consists of the false top orsupplemental top N of smaller diameter than the crown Z and secured justbelow the latter, leaving a space or passage 0 between, and is below theshort smoke-flue f. The crown or top Z is of course tight and fast as aclose cover on the cylinder m, and said crown here forms the bottom ofthe lower hotair chamber F. The false top or supplemental top N iscircular, and being smaller than the crown forms an annular opening 19for smoke and hot air, leading up from the chamber e to the space 0 andthence to the flue f.

As an entirety, the supplemental top N is circular. A part of itto wit,the two sidesis stationary; but it has a central section fixed to thecrown for the end of the slideplate N toabut against when said plate isin position. By removing the central slide-plate N access may be had tothe space 0 above the stationary sides, and said space may be cleaned ofash-dust and soot, and also the flue f may be cleaned. The supplementaltop N may be termed a spreader,. because it serves to divert theascending products of combustion and cause them to take to the circularwall of the heater before they can enter the space 0 and escape from thecombustion-chamber. The circular wall will thereby be more intenselyheated and heat will be radiated into the air of the room.

The base T of the stove below the ashdrawer has two plates to 11, oneabove the other, and an air-space w is between them, as shown in Figs. 1and 4. On top and at the front the upper plate It has inlets or openingsw to admit the cool air from the room into the space, and at the rearthe upper plate 11, has an opening y communicating with the air-drum D,

which leads upward to the air-chamber F in the top. This space to formsa separate and distinct air-flue. Thus provision is made for a rapidcirculation by the cool air of the room entering at openings at, passingthrough the space w in the base, then out at opening 'y up the air-drumD to top chamber F, the air being heated in this circuit, then out atthe front of the stove.

Having thus described myinvention, what I claim is-- 1. In afireplace-l1eater, the combination of a fire-pot; a combustion-chamber,e, in the upper part of the heater; an open-top magazine, Gr, below thecombustion-chamber and depending into the fire-pot and having a topexterior flange, c, which separates the firepot from thecombustion-chamber, said flange provided with smoke-holes, cl; anexit-flue, f, in the crown; and afalse or supplemental top smaller thansaidcrown, and secured to the latter by lugs so as to form between thetwo a space or passage, 0, and also form around the edge of saidsupplemental top an annular 1o sagesaid supplemental top being composedof two stationary sides having parallel guides and a central section, N,which slides between said two sides in the guides thereon, as set forth.

In testimony whereof I affix my signature I 5 in the presence of twowitnesses.

JOHN B. OLDERSHAVV. Witnesses:

CHAPIN A. FERGUSON, THos. O. BAILEY.

